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Cheat System: Fix a bug where the underlying cheat data would get deallocated earlier than intended. (Regression from commit 0c90e8f.) 

- In CheatDBGame, also differentiate between actual entry size vs. working entry size.
This commit is contained in:
rogerman 2023-07-19 12:22:06 -07:00
parent d08a5dc56c
commit 9bf090b309
2 changed files with 30 additions and 22 deletions
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39
desmume/src/cheatSystem.cpp
View File

@ -1702,7 +1702,8 @@ CheatDBGame::CheatDBGame()
_firstEntryOffset = 0;
_encryptOffset = 0;
_dataSize = 0;
_rawDataSize = 0;
_workingDataSize = 0;
_crc = 0;
_entryCount = 0;
@ -1723,9 +1724,9 @@ CheatDBGame::CheatDBGame()
_cheatItemCount = 0;
}
CheatDBGame::CheatDBGame(const u32 encryptOffset, const FAT_R4 &fat, const u32 dataSize)
CheatDBGame::CheatDBGame(const u32 encryptOffset, const FAT_R4 &fat, const u32 rawDataSize)
{
CheatDBGame::SetInitialProperties(dataSize, encryptOffset, fat);
CheatDBGame::SetInitialProperties(rawDataSize, encryptOffset, fat);
_firstEntryOffset = 0;
_entryCount = 0;
@ -1745,9 +1746,9 @@ CheatDBGame::CheatDBGame(const u32 encryptOffset, const FAT_R4 &fat, const u32 d
_cheatItemCount = 0;
}
CheatDBGame::CheatDBGame(FILE *fp, const bool isEncrypted, const u32 encryptOffset, const FAT_R4 &fat, const u32 dataSize, u8 (&workingBuffer)[1024])
CheatDBGame::CheatDBGame(FILE *fp, const bool isEncrypted, const u32 encryptOffset, const FAT_R4 &fat, const u32 rawDataSize, u8 (&workingBuffer)[1024])
{
CheatDBGame::SetInitialProperties(dataSize, encryptOffset, fat);
CheatDBGame::SetInitialProperties(rawDataSize, encryptOffset, fat);
CheatDBGame::LoadPropertiesFromFile(fp, isEncrypted, workingBuffer);
_entryDataRawPtr = NULL;
@ -1774,9 +1775,10 @@ CheatDBGame::~CheatDBGame()
}
}
void CheatDBGame::SetInitialProperties(const u32 dataSize, const u32 encryptOffset, const FAT_R4 &fat)
void CheatDBGame::SetInitialProperties(const u32 rawDataSize, const u32 encryptOffset, const FAT_R4 &fat)
{
_dataSize = dataSize;
_rawDataSize = rawDataSize;
_workingDataSize = rawDataSize + encryptOffset;
_encryptOffset = encryptOffset;
_baseOffset = (u32)fat.addr;
_crc = fat.CRC;
@ -1789,7 +1791,7 @@ void CheatDBGame::SetInitialProperties(const u32 dataSize, const u32 encryptOffs
void CheatDBGame::LoadPropertiesFromFile(FILE *fp, const bool isEncrypted, u8 (&workingBuffer)[1024])
{
const size_t gameDataBufferSize = (_dataSize < sizeof(workingBuffer)) ? _dataSize : sizeof(workingBuffer);
const size_t gameDataBufferSize = (_workingDataSize < sizeof(workingBuffer)) ? _workingDataSize : sizeof(workingBuffer);
CheatDBFile::ReadToBuffer(fp, _baseOffset, isEncrypted, _encryptOffset, gameDataBufferSize, workingBuffer);
const u8 *gameDataBuffer = workingBuffer + _encryptOffset;
@ -1817,9 +1819,14 @@ u32 CheatDBGame::GetEncryptOffset() const
return this->_encryptOffset;
}
u32 CheatDBGame::GetDataSize() const
u32 CheatDBGame::GetRawDataSize() const
{
return this->_dataSize;
return this->_rawDataSize;
}
u32 CheatDBGame::GetWorkingDataSize() const
{
return this->_workingDataSize;
}
u32 CheatDBGame::GetCRC() const
@ -1900,10 +1907,10 @@ u8* CheatDBGame::LoadEntryData(FILE *fp, const bool isEncrypted)
this->_entryData = NULL;
}
this->_entryDataRawPtr = (u8 *)malloc(this->_dataSize + 8);
memset(this->_entryDataRawPtr, 0, this->_dataSize + 8);
this->_entryDataRawPtr = (u8 *)malloc(this->_workingDataSize + 8);
memset(this->_entryDataRawPtr, 0, this->_workingDataSize + 8);
bool didReadSuccessfully = CheatDBFile::ReadToBuffer(fp, this->_baseOffset, isEncrypted, this->_encryptOffset, this->_dataSize, this->_entryDataRawPtr);
bool didReadSuccessfully = CheatDBFile::ReadToBuffer(fp, this->_baseOffset, isEncrypted, this->_encryptOffset, this->_workingDataSize, this->_entryDataRawPtr);
if (!didReadSuccessfully)
{
free(this->_entryDataRawPtr);
@ -2381,7 +2388,6 @@ u32 CheatDBFile::LoadGameList(const char *gameCode, const u32 gameDatabaseCRC, C
if (this->_isEncrypted)
{
encryptOffset = (u32)(fatEntryCurrent.addr % 512);
dataSize += encryptOffset;
}
if (dataSize == 0)
@ -2444,9 +2450,8 @@ bool CHEATSEXPORT::load(const char *path)
return didLoadSucceed;
}
CheatDBGameList gameList;
this->_dbFile.LoadGameList(gameInfo.header.gameCode, gameInfo.crcForCheatsDb, gameList);
CheatDBGame *dbGamePtr = GetCheatDBGameEntryFromList(gameList, gameInfo.header.gameCode, gameInfo.crcForCheatsDb);
this->_dbFile.LoadGameList(gameInfo.header.gameCode, gameInfo.crcForCheatsDb, this->_tempGameList);
CheatDBGame *dbGamePtr = GetCheatDBGameEntryFromList(this->_tempGameList, gameInfo.header.gameCode, gameInfo.crcForCheatsDb);
if (dbGamePtr == NULL)
{

13
desmume/src/cheatSystem.h
View File

@ -201,7 +201,8 @@ protected:
u32 _firstEntryOffset; // This offset is relative to the file head.
u32 _encryptOffset; // This offset is relative to the memory address of this->_entryDataRawPtr.
u32 _dataSize;
u32 _rawDataSize;
u32 _workingDataSize;
u32 _crc;
u32 _entryCount;
@ -219,17 +220,18 @@ protected:
public:
CheatDBGame();
CheatDBGame(const u32 encryptOffset, const FAT_R4 &fat, const u32 dataSize);
CheatDBGame(FILE *fp, const bool isEncrypted, const u32 encryptOffset, const FAT_R4 &fat, const u32 dataSize, u8 (&workingBuffer)[1024]);
CheatDBGame(const u32 encryptOffset, const FAT_R4 &fat, const u32 rawDataSize);
CheatDBGame(FILE *fp, const bool isEncrypted, const u32 encryptOffset, const FAT_R4 &fat, const u32 rawDataSize, u8 (&workingBuffer)[1024]);
~CheatDBGame();
void SetInitialProperties(const u32 dataSize, const u32 encryptOffset, const FAT_R4 &fat);
void SetInitialProperties(const u32 rawDataSize, const u32 encryptOffset, const FAT_R4 &fat);
void LoadPropertiesFromFile(FILE *fp, const bool isEncrypted, u8 (&workingBuffer)[1024]);
u32 GetBaseOffset() const;
u32 GetFirstEntryOffset() const;
u32 GetEncryptOffset() const;
u32 GetDataSize() const;
u32 GetRawDataSize() const;
u32 GetWorkingDataSize() const;
u32 GetCRC() const;
u32 GetEntryCount() const;
u32 GetCheatItemCount() const;
@ -281,6 +283,7 @@ class CHEATSEXPORT
{
private:
CheatDBFile _dbFile;
CheatDBGameList _tempGameList;
CheatDBGame *_selectedDbGame;
CHEATS_LIST *_cheats;